nymaim | 552ec3d29bca7bad4df01f4d4444739220cbe4682cfc3b4ecae40f8c26c5ba02

Analysis

max time kernel
53s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 21:16

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General

Target

file.exe
Size

1.7MB
MD5

9f41603cd10b2b74a210d9a21237af52
SHA1

0bc3f04ccc6919fce3c4f4f15a4c40759b5095ea
SHA256

552ec3d29bca7bad4df01f4d4444739220cbe4682cfc3b4ecae40f8c26c5ba02
SHA512

625daae77f65208c54969905dbfaf574e78afbdc12aafafe98f444ac159ce29de12f9fa7b0b71f7aba1fa1349440e02a3be388e4fbd86b95e2de10a7a3e1ad36
SSDEEP

49152:228PmHSIJBb7tVQvyQqbyyBQ1/0gB6k+m6d1qapk:PNHfttVYeOLSm6d1Zi

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Executes dropped EXE 3 IoCs

Processes:

file.tmpMitFiles138.exeNxIgj9s9.exe

pid process

2040 file.tmp
1948 MitFiles138.exe
652 NxIgj9s9.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1228 file.exe
2040 file.tmp
2040 file.tmp
2040 file.tmp
2040 file.tmp
1948 MitFiles138.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
2040	file.tmp
1948	MitFiles138.exe
652	NxIgj9s9.exe

pid	process
1228	file.exe
2040	file.tmp
2040	file.tmp
2040	file.tmp
2040	file.tmp
1948	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\language\is-1B232.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-Q63IS.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-CCKJ1.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-8IJAJ.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-BLCRC.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-D5O8K.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-EUC5V.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-R475H.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-H1VOP.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-83CT3.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-APVQQ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-QTENH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-MMJFA.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-4AU7N.tmp	file.tmp

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1092 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1948 MitFiles138.exe
1948 MitFiles138.exe
1948 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1092 taskkill.exe

pid	process
1092	taskkill.exe

pid	process
1948	MitFiles138.exe
1948	MitFiles138.exe
1948	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1092	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 1228 wrote to memory of 2040	1228	file.exe	file.tmp
PID 2040 wrote to memory of 1948	2040	file.tmp	MitFiles138.exe
PID 2040 wrote to memory of 1948	2040	file.tmp	MitFiles138.exe
PID 2040 wrote to memory of 1948	2040	file.tmp	MitFiles138.exe
PID 2040 wrote to memory of 1948	2040	file.tmp	MitFiles138.exe
PID 1948 wrote to memory of 652	1948	MitFiles138.exe	NxIgj9s9.exe
PID 1948 wrote to memory of 652	1948	MitFiles138.exe	NxIgj9s9.exe
PID 1948 wrote to memory of 652	1948	MitFiles138.exe	NxIgj9s9.exe
PID 1948 wrote to memory of 652	1948	MitFiles138.exe	NxIgj9s9.exe
PID 1948 wrote to memory of 1652	1948	MitFiles138.exe	cmd.exe
PID 1948 wrote to memory of 1652	1948	MitFiles138.exe	cmd.exe
PID 1948 wrote to memory of 1652	1948	MitFiles138.exe	cmd.exe
PID 1948 wrote to memory of 1652	1948	MitFiles138.exe	cmd.exe
PID 1652 wrote to memory of 1092	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 1092	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 1092	1652	cmd.exe	taskkill.exe
PID 1652 wrote to memory of 1092	1652	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\is-I5AHV.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-I5AHV.tmp\file.tmp" /SL5="$70124,1512219,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1948
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\NxIgj9s9.exe
      4⤵
      Executes dropped EXE
      PID:652
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1652
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
2.0MB

MD5
6cb6836703f27ff54d1849d30414b8cb

SHA1
e03f4c4a7306ad9b0af344792fbab3f4e91c184e

SHA256
388833deea9cac855de4e6b8d85549d37a0a727fc7be762b96469cc51a7b2421

SHA512
a7d29f14e288929a882e46bcf0322957d42f16ba493fc3ad2a94d3666765a7a24cbb6cb0e462af334e5d509e4fd3454c860a604114551d51b1c08ebbbaf0062d

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
2.0MB

MD5
6cb6836703f27ff54d1849d30414b8cb

SHA1
e03f4c4a7306ad9b0af344792fbab3f4e91c184e

SHA256
388833deea9cac855de4e6b8d85549d37a0a727fc7be762b96469cc51a7b2421

SHA512
a7d29f14e288929a882e46bcf0322957d42f16ba493fc3ad2a94d3666765a7a24cbb6cb0e462af334e5d509e4fd3454c860a604114551d51b1c08ebbbaf0062d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I5AHV.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-I5AHV.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\NxIgj9s9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
2.0MB

MD5
6cb6836703f27ff54d1849d30414b8cb

SHA1
e03f4c4a7306ad9b0af344792fbab3f4e91c184e

SHA256
388833deea9cac855de4e6b8d85549d37a0a727fc7be762b96469cc51a7b2421

SHA512
a7d29f14e288929a882e46bcf0322957d42f16ba493fc3ad2a94d3666765a7a24cbb6cb0e462af334e5d509e4fd3454c860a604114551d51b1c08ebbbaf0062d

Download Submit
\Users\Admin\AppData\Local\Temp\is-F6RH9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-F6RH9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-F6RH9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-I5AHV.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\NxIgj9s9.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/652-75-0x0000000000000000-mapping.dmp

Download
memory/1092-84-0x0000000000000000-mapping.dmp

Download
memory/1228-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1228-54-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

Download
memory/1228-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1228-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1652-83-0x0000000000000000-mapping.dmp

Download
memory/1948-70-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1948-73-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1948-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1948-82-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1948-71-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1948-85-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1948-66-0x0000000000000000-mapping.dmp

Download
memory/2040-81-0x00000000035B0000-0x00000000045A4000-memory.dmp

Filesize
16.0MB

Download
memory/2040-69-0x00000000035B0000-0x00000000045A4000-memory.dmp

Filesize
16.0MB

Download
memory/2040-58-0x0000000000000000-mapping.dmp

Download